SDLT partial closure notices: how the 2017 reform split HMRC enquiries

Most SDLT compliance checks are not a single, neat dispute. A check opened under the standard nine-month window in paragraph 12 of Schedule 10 to the Finance Act 2003 can travel along several lines at once — a residency-test question, a chattels-apportionment point, a linked-transactions argument, an additional-property surcharge query — and each strand often resolves on a different timetable. Before 2017, none of that mattered procedurally: HMRC closed an enquiry once, with one closure notice covering every matter, and the taxpayer had to wait for the slowest issue before any decision could be appealed.

Schedule 15 to the Finance (No. 2) Act 2017 changed that. From July 2017 onwards, HMRC has a statutory power to issue a partial closure notice on one matter while the rest of the enquiry continues. The taxpayer has a mirror-image right: a formal application asking the First-tier Tribunal to direct HMRC to close a specified matter within a specified period. Both routes leave any unresolved matters live, so the enquiry continues on the remaining strands.

This piece is a factual reference. It does not advise on whether to apply for a partial closure notice — that is a question for a tax adviser who knows the facts. It walks the mechanic, the appeal route, and the contrast with the pre-2017 single-closure-notice regime, so the reader can recognise what HMRC's letter is doing and what their own application options are.

Why the change mattered

Pre-2017, the practical effect of the single-closure rule was that a quick win — say, the residency-test point settled in HMRC's favour after three months of correspondence — sat parked until the slow-burn issue (a contested chattels valuation needing a third-party expert) was also ready. Tax due on the resolved matter could not be quantified and assessed, interest continued to accrue at the official rate, and the taxpayer could not move on commercially.

For SDLT, where transactions are one-off rather than annual and the amounts at stake are often substantial, the parking effect was particularly acute. In 2025 alone, Homecost data shows around 760,361 of the year's 848,775 registered residential transactions in England and Wales sat above the £125,000 SDLT nil-rate threshold (HM Land Registry pp-complete, accessed 2026-05-31), with 148,392 above £500,000 — the band where surcharge or relief disputes can swing the bill by tens of thousands of pounds. A typical £750,000 purchase carries a standard SDLT bill of £27,500 (HMRC residential rates, 2026); a contested 5% additional-property surcharge on the same price would add another £37,500 on top, an amount no buyer wants sitting in limbo through a multi-strand enquiry.

The 2017 reform was modelled on parallel changes Schedule 15 made to corporation tax (Schedule 18 FA 1998) and self-assessment income tax (Schedule 1A TMA 1970), and applied across the direct-tax regimes including SDLT enquiries under Schedule 10 FA 2003.

What a "matter" means

The statutory unit is the "matter" — a discrete question within an enquiry. HMRC's published guidance describes it as a separate issue that can be resolved on its own without prejudicing other open issues (HMRC Compliance Handbook, CH272000-series guidance on partial closure notices, accessed 2026-05-31).

In an SDLT context, a single enquiry letter under paragraph 12 of Schedule 10 might contain several matters in this sense:

• Was the buyer non-UK resident for SDLT purposes on the effective date (so that the 2% non-resident surcharge under Schedule 9A FA 2003 applied)?
• Was a £25,000 chattels apportionment realistic, or is HMRC seeking to bring more of the price into the chargeable consideration?
• Did the transaction link to a separate purchase by a connected party such that the linked-transactions rule in section 108 FA 2003 changed the rate?
• Did the buyer qualify for first-time buyer relief under Schedule 6ZA, given the contested treatment of an earlier interest in a property abroad?

Each of those is its own thread of fact and law. The 2017 reform recognises that they need not all close at the same time.

The two routes to a partial closure

HMRC-initiated partial closure notice

HMRC can issue a partial closure notice when an officer is satisfied that one or more matters in the enquiry have been concluded. The notice has to state HMRC's conclusions on the specified matter and quantify any consequent amendment to the land-transaction return. The enquiry as a whole stays open on the unconcluded matters.

A partial closure notice triggers a fresh 30-day appeal window under paragraphs 35 and 36 of Schedule 10 FA 2003, just as a full closure notice would. The appeal sits with the First-tier Tribunal (Tax Chamber) and is procedurally distinct from any later appeal against a final closure notice on a different matter — each notice has its own appeal track.

Taxpayer-initiated application for a direction

The taxpayer (or their agent) can apply to the First-tier Tribunal for a direction requiring HMRC to issue a partial closure notice on a specified matter within a specified period. This mirrors the pre-existing application-for-closure mechanic under Schedule 10. The tribunal will direct closure unless HMRC can show reasonable grounds for not issuing the notice within the period applied for.

The reasonable-grounds test is the familiar HMRC v Bloomberg / HMRC v Stephen Price line for full closure applications — outstanding information requests, third-party valuations still pending, and similar. The application route gives the taxpayer leverage when an enquiry has stagnated on a single strand while other issues are clearly resolvable.

How it differs from the pre-2017 closure notice

The single-closure regime under Schedule 10 has not been abolished. The 2017 reform layered partial closure on top, leaving the original closure-notice machinery intact for cases where every matter in the enquiry is concluded at the same time.

The practical contrast:

The procedural cost of a partial closure is that each notice generates its own appeal timeline and, if appealed, its own tribunal hearing on that matter. The benefit is that resolved issues stop accruing interest and uncertainty while the contested ones run their course.

Where the partial-closure route does not help

It is worth being clear about the limits. A partial closure notice is only useful where the enquiry genuinely contains separable matters. Many SDLT enquiries — especially the standard additional-property surcharge or first-time-buyer-relief query — turn on a single point of fact. There is no second matter to peel off, and a partial-closure application would be refused on that ground.

The route is also not a substitute for the self-amendment window under paragraph 6 of Schedule 10, which lets the buyer correct a return within 12 months of the filing date without HMRC involvement. Where the amendment route is still open and the facts are clear, it is faster and does not require a tribunal application.

Finally, the partial-closure mechanic sits within the standard SDLT enquiry-window regime. It does not affect the four-year, six-year (carelessness) or twenty-year (deliberate) discovery-assessment windows under paragraph 30 of Schedule 10 — those operate outside the in-enquiry closure regime entirely. The "deliberate" test set out in Tooth v HMRC is the relevant authority where discovery is in play.

Interest, penalties and the resolved-matter clock

When a partial closure notice quantifies additional tax on a single matter, that tax becomes due and interest stops accruing on the resolved sum from the due date HMRC specifies (under the standard interest rules in section 87 of the Taxes Management Act 1970 as applied to SDLT through Schedule 12 FA 2003). Interest on the unresolved matters continues until those matters close in turn.

Penalties under Schedule 24 of Finance Act 2007 (inaccuracy penalties) and Schedule 41 of Finance Act 2008 (failure-to-notify) are determined per inaccuracy, not per closure notice, so a partial closure does not crystallise the entire penalty position. HMRC's penalty assessment can run alongside the partial closure or be issued separately, and the prompted-versus-unprompted distinction under Schedule 24 continues to govern the floor of any penalty band.

What the letter from HMRC will look like

A partial closure notice will typically:

1. Cite paragraph 12 of Schedule 10 FA 2003 as the enquiry's statutory authority
2. Identify the matter being closed (in clear terms — for example, "the residency test for the 2% non-resident surcharge")
3. State HMRC's conclusion on that matter
4. Quantify any consequent amendment to the return and the additional SDLT due
5. State that other matters in the enquiry remain under check
6. Enclose factsheet CC/FS1a (general information about compliance checks) and any other relevant factsheets
7. Set out the 30-day appeal route to the First-tier Tribunal

If the letter does all of those things, it is a partial closure notice within the meaning of the 2017 reform. If it purports to close every issue and end the enquiry, it is a full closure notice — and the in-flight enquiry on remaining matters needs to be checked separately.

When the route is worth considering

Three fact-patterns surface repeatedly in published HMRC and tribunal material:

• Mixed-residency couples: where one spouse's residency status is uncomplicated and the other's involves a Statutory Residence Test reading that takes time to resolve, a partial closure on the simple side can crystallise the part of the bill that is not in dispute.
• Linked-transactions disputes: where the linked-transactions allegation under section 108 turns on contractual interpretation but a separate point — say, an in-dispute reservation of an easement — is genuinely standalone, partial closure on the standalone point can be available.
• Chattels apportionment: where the cash mechanics of the apportionment are agreed but HMRC contests the valuation, separating the legal point (was the apportionment valid in principle?) from the valuation point can let the legal question close while the valuation strand continues.

In each case the question of whether the matters are genuinely separable is fact-specific and turns on the precise framing of HMRC's enquiry letter. Speak to a qualified adviser before applying for a partial closure notice or appealing one issued by HMRC.

Quick reference

The 2017 reform sits in Schedule 15 to the Finance (No. 2) Act 2017. The SDLT-side amendments operate on Schedule 10 to the Finance Act 2003. HMRC's published guidance on partial closure notices is in the Compliance Handbook (CH272000 series).

For sample SDLT figures and the underlying transaction data that powers the worked examples here, the Homecost postcode tool reports the latest median sale prices and council tax for any UK postcode, and the cost-intelligence guides catalogue the procedural pieces in this cluster.

This is general information about the partial closure notice procedure, not advice on whether to use it. Schedule 10 of Finance Act 2003, Schedule 15 of Finance (No. 2) Act 2017 and the HMRC manual references are the authoritative source. Speak to a qualified adviser before acting.